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BOSTON MARATHON 2025

Bradley Birch

Bib: 470•M

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0:00
0:00
/ mi
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Overall
#0 / 28404
Top 8%
Gender (Male)
#0 / 16105
Top 14%
Age Group (M18-39)
#0 / 5642
Top 33%
Race Day Weather
50°/40°F
broken clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
16:34
Rank: #84
Start → 5K
16:34 | 5:20/mi
10K· 6.21 mi
33:18
Rank: #108 (-24)
5K → 10K
16:44 | 5:23/mi
15K· 9.32 mi
50:21
Rank: #113 (-5)
10K → 15K
17:03 | 5:29/mi
20K· 12.43 mi
1:07:54
Rank: #132 (-19)
15K → 20K
17:33 | 5:39/mi
Half· 13.11 mi
1:11:50
Rank: #147 (-15)
20K → Half
3:56 | 5:46/mi
25K· 15.53 mi
1:34:15
Rank: #1158 (-1011)
Half → 25K
22:25 | 9:15/mi
30K· 18.64 mi
1:56:21
Rank: #1666 (-508)
25K → 30K
22:06 | 7:07/mi
20M
2:05:43
Rank: #1768 (-102)
30K → 20M
9:22 | 6:54/mi
21M
2:12:58
Rank: #1813 (-45)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:17:55
Rank: #1839 (-26)
21M → 35K
4:57 | 6:37/mi
23M
2:28:04
Rank: #2200 (-361)
35K → 23M
10:09 | 8:06/mi
24M
2:35:28
Rank: #2357 (-157)
23M → 24M
7:24 | 7:24/mi
40K· 24.85 mi
2:41:31
Rank: #2401 (-44)
24M → 40K
6:03 | 7:05/mi
25.2M
2:44:07
Rank: #2405 (-4)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
2:50:45
Rank: #2397 (+8)
25.2M → Finish
6:38 | 6:31/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:11:50
Pace5:29 /mi
2nd Half
Distance13.11 mi
Time1:38:55
Pace7:33 /mi
📊Positive Split: 37.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:16:3816:345:2016:34
5:20
-
10K
6.21 mi10:33:2233:185:2216:44
5:23
+0:03
15K
9.32 mi10:50:2550:215:2417:03
5:29
+0:06
20K
12.43 mi11:07:581:07:545:2817:33
5:39
+0:10
Half
13.11 mi11:11:541:11:505:293:56
5:46
+0:07
25K
15.53 mi11:34:191:34:156:0422:25
9:15
+3:29
30K
18.64 mi11:56:251:56:216:1422:06
7:07
-2:08
20M
20.00 mi12:05:472:05:436:179:22
6:54
-0:13
21M
21.00 mi12:13:022:12:586:207:15
7:15
+0:21
35K
21.75 mi12:17:592:17:556:204:57
6:37
-0:38
23M
23.00 mi12:28:082:28:046:2610:09
8:06
+1:29
24M
24.00 mi12:35:322:35:286:297:24
7:24
-0:42
40K
24.85 mi12:41:352:41:316:306:03
7:05
-0:19
25.2M
25.20 mi12:44:112:44:076:312:36
7:32
+0:27
Finish
26.22 mi12:50:492:50:456:316:38
6:31
-1:01

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

5:20 /mi

Average Pace

6:31 /mi

Slowest Pace

9:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:11:50

42% of race

Time at Steady Pace

1:03:45

37% of race

Time at Slower Pace

35:10

21% of race

Average Pace: 6:31 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:16:3816:345:2016:34
5:20
#84
10K
6.21 mi10:33:2233:185:2216:44
5:23
#108
15K
9.32 mi10:50:2550:215:2417:03
5:29
#113
20K
12.43 mi11:07:581:07:545:2817:33
5:39
#132
Half
13.11 mi11:11:541:11:505:293:56
5:46
#147
25K
15.53 mi11:34:191:34:156:0422:25
9:15
#1158
30K
18.64 mi11:56:251:56:216:1422:06
7:07
#1666
20M
20.00 mi12:05:472:05:436:179:22
6:54
#1768
21M
21.00 mi12:13:022:12:586:207:15
7:15
#1813
35K
21.75 mi12:17:592:17:556:204:57
6:37
#1839
23M
23.00 mi12:28:082:28:046:2610:09
8:06
#2200
24M
24.00 mi12:35:322:35:286:297:24
7:24
#2357
40K
24.85 mi12:41:352:41:316:306:03
7:05
#2401
25.2M
25.20 mi12:44:112:44:076:312:36
7:32
#2405
Finish
26.22 mi12:50:492:50:456:316:38
6:31
#2397
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi848484150(Top 0.5%)128(Top 0.8%)128(Top 2%)
10K6.21 mi3.10 mi108-2489-589-5125(Top 0.4%)104(Top 0.6%)104(Top 2%)
15K9.32 mi3.11 mi113-593-493-4150(Top 0.5%)128(Top 0.8%)128(Top 2%)
20K12.43 mi3.11 mi132-19112-19112-19256(Top 0.9%)230(Top 1%)230(Top 4%)
Half13.11 mi0.68 mi147-15124-12124-12536(Top 2%)504(Top 3%)504(Top 9%)
25K15.53 mi2.42 mi1158-10111094-9701094-97020947(Top 74%)12819(Top 80%)12819(Top 227%)
30K18.64 mi3.11 mi1666-5081582-4881582-4885392(Top 19%)4850(Top 30%)4850(Top 86%)
20M20.00 mi1.36 mi1768-1021680-981680-983481(Top 12%)3217(Top 20%)3217(Top 57%)
21M21.00 mi1.00 mi1813-451723-431723-433380(Top 12%)3102(Top 19%)3102(Top 55%)
35K21.75 mi0.75 mi1839-261747-241747-243062(Top 11%)2817(Top 17%)2817(Top 50%)
23M23.00 mi1.25 mi2200-3612094-3472094-34710757(Top 38%)7609(Top 47%)7609(Top 135%)
24M24.00 mi1.00 mi2357-1572243-1492243-1497023(Top 25%)5538(Top 34%)5538(Top 98%)
40K24.85 mi0.85 mi2401-442280-372280-374331(Top 15%)3729(Top 23%)3729(Top 66%)
25.2M25.20 mi0.35 mi2405-42282-22282-23580(Top 13%)3124(Top 19%)3124(Top 55%)
Finish26.22 mi1.02 mi2397+82272+102272+102874(Top 10%)2569(Top 16%)2569(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.5%
×21stories
+97ft-345ft

Overall

150

Males

128

M18-39

128

5K→10K

3.1 - 6.2 mi

Top 0.4%
×5stories
+79ft-138ft

Overall

125

Males

104

M18-39

104

10K→15K

6.2 - 9.3 mi

Top 0.5%
×3stories
+67ft-78ft

Overall

150

Males

128

M18-39

128

15K→20K

9.3 - 12.4 mi

Top 0.9%
×5stories
+106ft-86ft

Overall

256

Males

230

M18-39

230

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

536

Males

504

M18-39

504

Half→25K

13.1 - 15.5 mi

Top 74%
×4stories
+66ft-88ft

Overall

20947

Males

12819

M18-39

12819

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

5392

Males

4850

M18-39

4850

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3481

Males

3217

M18-39

3217

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3380

Males

3102

M18-39

3102

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3062

Males

2817

M18-39

2817

35K→23M

21.8 - 23.0 mi

Top 38%
×5stories
+23ft-63ft

Overall

10757

Males

7609

M18-39

7609

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

7023

Males

5538

M18-39

5538

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

4331

Males

3729

M18-39

3729

40K→25.2M

24.9 - 25.2 mi

Top 13%
×1story
+13ft-16ft

Overall

3580

Males

3124

M18-39

3124

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2874

Males

2569

M18-39

2569

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
156
Passed By
2469
Net Change
-2313
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#84
5K → 10K226-24#84#108
10K → 15K510-5#108#113
15K → 20K019-19#113#132
20K → Half015-15#132#147
Half → 25K01011-1011#147#1158
25K → 30K1509-508#1158#1666
30K → 20M15117-102#1666#1768
20M → 21M2469-45#1768#1813
21M → 35K1844-26#1813#1839
35K → 23M4365-361#1839#2200
23M → 24M13170-157#2200#2357
24M → 40K2367-44#2357#2401
40K → 25.2M1317-4#2401#2405
25.2M → Finish3830+8#2405#2397
TOTALS1562469-2313
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing